Question

1. find the value of y. 72° 68° y° = 72 + 68 = 140

Explanation:

Step1: Identify exterior angle rule

The exterior angle of a triangle equals the sum of the two non-adjacent interior angles.

Step2: Sum the two interior angles

$y = 72 + 68$

Step3: Calculate the final value

$y = 140$

Answer:

$140^\circ$